The four year old Kangaroo who had been attacked by a wolf last year has undergone plastic surgery by Los Angeles-based surgeon, Theodore Corwin, better known for performing face-lifts, tummy tucks, breast enhancements and other cosmetic procedures on humans.

The surgeon spent two hours operating the marsupial, named Feznik, who lives on a Californian farm for Hollywood animals used at corporate events, in movies and advertisements.

"He was missing part of one side of the lip and it made him look ugly and his tooth was sticking out," Dr Corwin told AAP.

Dr Corwin said Feznik was fortunate to have fur to cover over his scars. But the operation, which involved about 25 stitches, still presented its challenges.

Dr Corwin performed the operation for no fee but he said similar surgery on a person would cost several thousand dollars.